The Pacific War took place in the South America in years 1879 to 1883. Which territory was the conflict zone?

Central Andes

Atacama Desert

Patagonia

Falkland Islands

In the 19th century, there were no clear borders defined between Peru, Bolivia and Chile in the area of the Atacama desert. This became a problem with the dis­cov­ery of valuable sodium nitrate deposits in the area.